The United Systems Coalition, or Coalition for short, is the central government and "defender of Earth and all her colonies.". Supposedly a democracy, it is in reality more of a military regime. It spreads it's influence through out the galaxy with aggressive military action and subterfuge.
Do to an ongoing rebellion requiring a massive military build up, they were already at full swing as the war began. Coalition infantry usually operates in large squads of 11 and can almost always rely on available air support. They are highly trained and armed with the best the Coalition can offer. When standard tactics don't work they usually turn to eit